The theory of exponents can be explained very simply. If a number is multiplied by itself repeatedly, it is definitely a math of exponents – also called powers. A number results in 1 if it is raised by exponent 0, unlike in multiplications, whereas it results in itself if it is raised by the exponent 1. Exponents apply itself to everyday science and the understanding of natural phenomena. Magnitude of earthquakes, measured in Richter’s Scale, requires applying the theory of exponents. For a thorough understanding of the subject, download the free 7th grade math worksheet and indulge in regular practice.